The Queen of Hearts on her throne
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A commonplace book.

Some words are worth collecting. Opuss returns them to you once you've half-forgotten them.

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What is a commonplace book?

For centuries, readers kept a book of borrowed words.

A commonplace book is where you copy out the lines worth keeping, the ones you would otherwise underline and never find again. Marcus Aurelius kept one. So did Virginia Woolf, Thomas Jefferson, and W. H. Auden.

Opuss is that book, for the way you read now: collect an item in a tap, and it comes back to you weeks later, when you've half-forgotten it.

How to keep a commonplace book

Collector for Mac

Collect from everything you read on your Mac.

A quiet companion in your menu bar. Select any text, press a key, and it's collected, with its source, and waiting on your phone.

Download for Mac

Questions

Is Opuss free? +

Yes. Collecting and keeping your commonplace book is free.

Where do my collected words live? +

Privately, in your own collection. Nothing is public unless you choose to publish it.

Can I log in to the website to manage my commonplace book? +

Managing your collection on the web is on its way. Coming soon.

Is there an Android app? +

Not yet. Tap "Notify me" on the Google Play badge and we'll tell you when it's ready.

What's the Mac Collector? +

A menu-bar utility that collects text from anything you read on your Mac, straight into your collection.